Co-operative Marque Usage

It has been [pointed out on Loomio](https://www.loomio.org/d/IHimcVgY/comment/1275922) that our use of the [Co-operative Marque](http://identity.coop/) doesn't comply with [the guidelines](http://identity.coop/sites/identity.coop/files/marque-download/marque_guidelines_en_0.pdf), we do however have [approval to use the logo](https://wiki.coops.tech/wiki/Coop_marque).